package org.activiti.engine.impl.cmd;
import java.io.Serializable;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.ActivitiIllegalArgumentException;
import org.activiti.engine.ActivitiObjectNotFoundException;
import org.activiti.engine.impl.interceptor.Command;
import org.activiti.engine.impl.interceptor.CommandContext;
import org.activiti.engine.impl.persistence.entity.JobEntity;
import org.activiti.engine.runtime.Job;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @author Saeid Mirzaei
* @author Joram Barrez
*/
public class DeleteJobCmd implements Command<Object>, Serializable {
private static final Logger log = LoggerFactory.getLogger(DeleteJobCmd.class);
private static final long serialVersionUID = 1L;
protected String jobId;
public DeleteJobCmd(String jobId) {
this.jobId = jobId;
}
public Object execute(CommandContext commandContext) {
JobEntity jobToDelete = getJobToDelete(commandContext);
jobToDelete.delete();
return null;
}
protected JobEntity getJobToDelete(CommandContext commandContext) {
if (jobId == null) {
throw new ActivitiIllegalArgumentException("jobId is null");
}
if (log.isDebugEnabled()) {
log.debug("Deleting job {}", jobId);
}
JobEntity job = commandContext.getJobEntityManager().findJobById(jobId);
if (job == null) {
throw new ActivitiObjectNotFoundException("No job found with id '" + jobId + "'", Job.class);
}
// We need to check if the job was locked, ie acquired by the job acquisition thread
// This happens if the the job was already acquired, but not yet executed.
// In that case, we can't allow to delete the job.
if (job.getLockOwner() != null) {
throw new ActivitiException("Cannot delete job when the job is being executed. Try again later.");
}
return job;
}
}